Fourths to george w



(No Model.)

J. RotlHmIILD.

PRESSURE REGULATOR.-

Patented 001;. 3, 1893.

NiTnD STATES PATENT OFFICE.

JOSEPH ROTHOHILD, OF BROOKLYN, NEW YORK, ASSIGNOR OF THREE- FOURTHS TOGEORGE W. RENTON, ROBERT-L. ORANFORD, AND GEORGE O. ORANFORD, OF SAMEPLACE.

PRESSURE-REGULATOR.

SPECIFICATION forming part of Letters Patent No. 505,850, dated October3, 1893.

Application filed .Tune 16, 1893. Serial No. 477,802. (No model.)

To all whom it may concern.-

Be it known that I, JOSEPH ROTHCHILD, of Brooklyn, county of Kings, andState of New York, have invented certain new and useful Improvements inPressure --Regulators, of which the following is a full, clear, andexact description, reference being had to the accompanying drawings, andto the letters of reference marked thereon.

My invention has relation to that class of devices or machines known aspressure regulators and employed to control the pressure of liquids orliuids which may How through or past the devices, to prevent damage, toinsure uniformity of pressure, and for other valuable offices inconnection with the medium operated upon.

Among the objects of my invention are the production of a machine of theclass above named, which shall be of few and simple parts capable ofeasy, accurate and certain operation by the action of the liquid oriiuid,-to provide for easy adjustment ot' the valve to compensate forany wear after long use,-to prevent the incoming pressure fromtightening the Valve in its seat-,-to provide a single and ready meansof regulating the pressure 'at which the liquid or fluid may bedischarged and of changing this pressure atvwill,-and to secure certainadvantages and economies in the construction, operation and use of themachine, as will be herein first fully described and then pointed out inthe claims.

In the drawings, Figure l is aside elevation or exterior view of myimproved pressure regulator. Fig. 2 is a vertical section and elevationupon a plane through line fr-x of Fig. l. Fig. 3 Vis a horizontalsection through the axis of the valve; and Fig. 4 is a cross sectionthrough the valve and casing.

In all the figures, like letters of reference, Wherever they occur,indicate corresponding parts.

A is the main shell (containing the valve) and B the inlet and O theoutlet openings for liquids or fluids at which any pipes or othervessels may be applied. Within shell A is a valve casing D of smallerdiameter thanl said shell, leaving a free channel ct between these twoparts, into which channel the liquid or iuid is forced from theinlet.The casing D is very slightly conical on its interior and it is held inplace against an abutment as b upon which it is crowded or packed by theend plug c which contains the outlet O.

E is a hollow, rotary valve, accurately ground into its casing or shellD, the valve and casing being correspondingly perforated on oppositesides, as atd and e. in its seat against longitudinal movement by ascrew boltf passing through its closed end and entering a hollowinternally and externally threaded plug g screwed in the end of casingD. The plug g is easily reached and turned through the inlet B, and itis set so as to bear against the end of the valve when the latter isproperly seated. Then the valve is locked or held against the plug bybolt f, which is easily reached and turned through the outlet. When thevalve after long use moves back a trifle and the boltf again tightened.The valve turns easily and smoothly on bolt f so as to avoid unnecessaryfriction at this part. The valve being slightly conical, largest towardits delivery end, and being perforated on opposite sides, externalpressure on the valve through ports e will be balanced, and

this pressure instead of crowding the valve.

tighter in its seat, will tend rather to loosen it, so that under allpressures the valve may be moved as easily as may be desired. Liquid oriiuidunder any pressure enters at the opening B, passes around casing D,through ports e and d (when they are opened), into the inner cavity ofthe valve and out at the larger open end thereof.

To automatically turn the valve so as to arrest or check the liow ofliquid or iiuid, and to make this turning correspond with the pressureproduced by the outgoing medium,

` I connect the valve with a diaphragm which is exposed to and operatedby the pressure of said medium.

Upon one side of shell A (and preferably cast therewith as shown) is acup shaped enlargement F, serving as a seat for a diaphragm v G, theinner cavity H communicating with the interior of shell A through asuitable opening in advance of the position of the The valve is held .7Gloosely in its seat, the plug g may be turnedY IOO ports through thevalve and casing. The diaphragm G is held in place by a bolted cap orcover H2 and is supplied with a stem I eX- tending above and below itand suitably secured by a ledge h and nut i. Around the upper part ofstem I and within neck H of cap H2 is a spring K bearing upon nut i atone end against a regulating screw k at the other. The screw k isthreaded into the upper part of neck H', and by turning this screw theamount of pressure upon the upper side of the diaphragm can be regulatedat Will, as will be readily seen.

To connect the valve E with stem I, I employ a rod Zwhich is threaded atone end into the material of the valve, passes through the opposite sideof the valve and into a cylinder or block m which is seated in the lowerend of stem I so that it can turn freely therein. When the valve ismoved longitudinally in its seat to loosen or tighten it, the rod Zmoves with it, and the block fm being loosely mounted, will slidelongitudinally in its seat to accommodate itself to the changed positionof the rod so as to avoid all cramping or binding and unnecessaryfriction. The

rod Z is adjusted to place by removing a plug n, which is afterwardreplaced. Under the construction explained, when the diaphragm rises orfalls, the valve is rotated in its seat through the medium of rod Z andits connections. medium entering the regulator should leave it withone-half its initial pressure. The spring K has then only to be adjustedso that the diaphragm will rise suliciently to close the valve as soonas the pressure beneath it reaches the determined point.

The valve is normally open. the liquid or uid on the outlet side of theregulator is considerably below the required degree it may continue toHow, but as soon as this pressure commences to increase the valvecommences to close, and when the predetermined pressure is reached thevalve arrests all further flow and automatically opens upon anydiminution of pressure. Any desired difference in degree of pressurebetween the Suppose it be desired that the So long as incoming andoutgoing medium may be provided for by varying the tension of thespring.

The working parts of the valve being completely covered and theatmosphere excluded by the main shell, expansion and contraction ofWorking parts are equal and they will therefore work easily and withoutsticking as would otherwise occur.

The improved regulator is especially well adapted for use in connectionwith domestic and other plumbing, operating to arrest the iiow of waterfrom the main the instant the pressure on the outlet side of theapparatus reaches a determined degree,but it maybe used in othersituations as well.

Having now fully described my invention, what I claim as new, and desireto secure by Letters Patent, is-

l. In a pressure regulator, the combination with the hollow valve andits casing located within the outer shell, of the hollow, threaded plugpassing through the valve cage and the screw bolt passing looselythrough the valve and engaging the screw plug, the parts being arrangedto adj ust the valve to its seat within the valve casing and beingaccessible, the one from the exterior through the inlet port and theother from the exterior through the outlet port, substantially as shownand described.

2. In a pressure regulator, the combination with the hollow, rotatingvalve and means for adjusting it in its seat, of a rod secured theretoand extending at right angles to the axis thereof, the stem connectedwith the diaphragm and a block mounted and turning in the lower end otsaid stem and capable of adjustment at right angles to the seat, the rodentering the block and serving to transmit motion from the diaphragm tothe valve, substantially as shown and described.

In testimony that I claim the foregoing I have hereunto setmy hand inthe presence of two witnesses.

JOSEPH ROTHCHILD.

Witnesses:

W. J. MORGAN, WORTH OsGooD.

